hey all, 48 hours ago i met a guy, we did anal for few seconds and i stopped him but after i stopped it even tho it was very short i notice he got pre -sperm and got few drops. im sure and checked that i had little liquid inside me also. since than im stressed. should i run to get pep or am i just over reacting? is it easy to get hiv from little drops? please answer since i need help. thanks.